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101 lines
2.9 KiB
C
101 lines
2.9 KiB
C
/*
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* libcsync -- a library to sync a directory with another
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*
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* Copyright (c) 2008 by Andreas Schneider <mail@cynapses.org>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* vim: ts=2 sw=2 et cindent
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*/
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#ifndef _GNU_SOURCE
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#define _GNU_SOURCE
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#endif
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#include <errno.h>
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#include <stdio.h>
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#include <time.h>
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#include "csync_time.h"
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#include "vio/csync_vio.h"
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#define CSYNC_LOG_CATEGORY_NAME "csync.time"
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#include "csync_log.h"
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/* check time difference between the replicas */
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time_t csync_timediff(CSYNC *ctx) {
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time_t timediff = -1;
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char *luri = NULL;
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char *ruri = NULL;
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csync_vio_handle_t *fp = NULL;
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csync_vio_file_stat_t *st = NULL;
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if (asprintf(&luri, "%s/csync_timediff.ctmp", ctx->local.uri) < 0) {
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goto out;
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}
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if (asprintf(&ruri, "%s/csync_timediff.ctmp", ctx->remote.uri) < 0) {
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goto out;
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}
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/* create temporary file on local */
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ctx->replica = ctx->local.type;
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fp = csync_vio_creat(ctx, luri, 0644);
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if (fp == NULL) {
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CSYNC_LOG(CSYNC_LOG_PRIORITY_FATAL, "Unable to create temporary file: %s - %s", luri, strerror(errno));
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goto out;
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}
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csync_vio_close(ctx, fp);
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/* Get the modification time */
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st = csync_vio_file_stat_new();
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if (csync_vio_stat(ctx, luri, st) < 0) {
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CSYNC_LOG(CSYNC_LOG_PRIORITY_FATAL, "Synchronisation is not possible! %s - %s", luri, strerror(errno));
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goto out;
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}
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timediff = st->mtime;
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csync_vio_file_stat_destroy(st);
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st = NULL;
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/* create temporary file on remote replica */
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ctx->replica = ctx->remote.type;
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fp = csync_vio_creat(ctx, luri, 0644);
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if (fp == NULL) {
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CSYNC_LOG(CSYNC_LOG_PRIORITY_FATAL, "Unable to create temporary file: %s - %s", ruri, strerror(errno));
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goto out;
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}
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csync_vio_close(ctx, fp);
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/* Get the modification time */
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st = csync_vio_file_stat_new();
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if (csync_vio_stat(ctx, luri, st) < 0) {
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CSYNC_LOG(CSYNC_LOG_PRIORITY_FATAL, "Synchronisation is not possible! %s - %s", ruri, strerror(errno));
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goto out;
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}
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/* calc time difference */
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timediff = abs(timediff - st->mtime);
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CSYNC_LOG(CSYNC_LOG_PRIORITY_DEBUG, "Time difference: %ld seconds", timediff);
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out:
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csync_vio_file_stat_destroy(st);
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csync_vio_unlink(ctx, luri);
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SAFE_FREE(luri);
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csync_vio_unlink(ctx, ruri);
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SAFE_FREE(ruri);
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return timediff;
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}
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